The Missing C1–C5 Cycloaromatization Reaction: Triplet State Antiaromaticity Relief and Self-Terminating Photorelease of Formaldehyde for Synthesis of Fulvenes …
RK Mohamed, S Mondal, K Jorner… - Journal of the …, 2015 - ACS Publications
The last missing example of the four archetypical cycloaromatizations of enediynes and
enynes was discovered by combining a twisted alkene excited state with a new self-
terminating path for intramolecular conversion of diradicals into closed-shell products.
Photoexcitation of aromatic enynes to a twisted alkene triplet state creates a unique
stereoelectronic situation, which is facilitated by the relief of excited state antiaromaticity of
the benzene ring. This enables the usually unfavorable 5-endo-trig cyclization and merges it …
enynes was discovered by combining a twisted alkene excited state with a new self-
terminating path for intramolecular conversion of diradicals into closed-shell products.
Photoexcitation of aromatic enynes to a twisted alkene triplet state creates a unique
stereoelectronic situation, which is facilitated by the relief of excited state antiaromaticity of
the benzene ring. This enables the usually unfavorable 5-endo-trig cyclization and merges it …
[引用][C] The Missing C1–C5 Cycloaromatization Reaction: Triplet State Antiaromaticity Relief and Self-Terminating Photorelease of Formaldehyde for Synthesis of …
M Sayantan, J Kjell, DT Faria, O Henrik - 2015
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